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Common Shareholders' Equity (Table)
12 Months Ended
Dec. 31, 2018
Stockholders' Equity Note [Abstract]  
Common shareholders' equity
Pursuant to certain employee and non-employee benefit plans, U.S. Cellular reissued the following Treasury Shares:
Year Ended December 31,
2018
 
2017
 
2016
(Shares in millions)
 
 
 
 
 
Treasury Shares Reissued
1

 

 
1